Boost Switching Regulator targets HDTV tuner applications.

Press Release Summary:



With max output voltage of 35 V and switch current of more than 350 mA, Model MIC2619 can power most high-voltage bias applications, such as TV tuners. Unit implements constant frequency 1.2 MHz PWM current-mode control scheme and includes programmable overvoltage protection in case of fault condition. Housed in Thin SOT-23 6-pin package, IC has operating junction temperature of -40 to +125°C. Other applications include optical networking equipment, LCD bias supplies, and SEPIC converters.



Original Press Release:



Micrel's Latest Thin-Profile Boost Regulator Targets HDTV Tuner Applications



San Jose, Calif., - Micrel Inc., (Nasdaq:MCRL), an industry leader in analog, high bandwidth communications and Ethernet IC solutions, today introduced the MIC2619, an integrated boost switching regulator operating at 1.2MHz that can supply up to 350mA switch current. The MIC2619 features programmable Over-Voltage Protection (OVP), very low shutdown current and soft start functionality. This device expands Micrel's MIC2601/2 and MIC2605/6 family of boost regulators and targets applications such as Digital TV-tuners, optical networking equipment, LCD bias supplies, SEPIC converters and positive output regulators. The device is currently available in volume quantities, with pricing starting at $0.40 for 1K quantities. Samples can now be ordered online on Micrel's web site at: www.micrel.com/ProductList.do .

"Micrel's latest integrated switch boost regulator with programmable OVP is ideally suited to power the tuner chips in today's HDTVs," stated Doyle Slack, director of analog marketing, Micrel. "A high PWM switching frequency and a thin-profile package reduces the design cost for LCD, LED and 3D High Definition TVs."

With a maximum output voltage of 35V and a switch current of more than 350mA, the MIC2619 easily powers most high voltage bias applications such as TV tuners. The MIC2619 implements a constant frequency 1.2MHz PWM current-mode control scheme. The high frequency PWM operation saves board space by reducing external component sizes. An additional benefit of the constant frequency PWM control scheme as opposed to variable frequency control schemes is the lower output noise and smaller input ripple injected back to the source.

The MIC2619 has programmable overvoltage protection to ensure output protection in case of fault condition.The MIC2619 is available in a low profile Thin SOT-23 6-pin package and has an operating junction temperature range of -40 °C to +125 °C.

About Micrel

Micrel Inc. is a leading global manufacturer of high performance analog and high-speed mixed signal solutions. The Company's products include advanced mixed-signal, analog and power semiconductors; high performance communication, clock management, Ethernet switch and physical layer transceiver ICs. Company customers include leading manufacturers of enterprise, consumer, industrial, mobile, telecommunications, automotive, and computer products. Corporation headquarters and state-of-the-art wafer fabrication facilities are located in San Jose, CA, with regional sales and support offices and advanced technology design centers situated throughout the Americas, Europe and Asia. In addition, the Company maintains an extensive network of distributors and sales representatives worldwide.

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